RTools.Util.StreamTokenizer.GetNextChar C# (CSharp) Method

        private int GetNextChar()
        {
            int c = int.MinValue;

            // consume from backString if possible
            if (backString.Length > 0)
            {
                c = backString[0];
                backString.Remove(0, 1);
#if DEBUG
                log.Debug("Backup char '{0}'", (char)c);
#endif
                return (c);
            }

            if (textReader == null) return (Eof);

            try
            {
                while ((c = textReader.Read()) == 13) { } // skip LF (13)
            }
            catch (Exception)
            {
                return (Eof);
            }

            if (c == 10)
            {
                lineNumber++;
#if DEBUG
                log.Debug("Line number incremented to {0}", lineNumber.ToString());
#endif
            }
            else if (c < 0)
            {
                c = Eof;
            }

#if DEBUG
            log.Debug("Read char '{0}' ({1})", (char)c, c);
#endif
            return (c);
        }